Hi kevinle123
Airmail can be as quick as overnight, or up to a few days. From the UK I have had letters arrive in the USA within 24 hours, or anything up to 3 days (or 5 if posted over a weekend).
My guess is from New Jersey to Vancouver (during the week) should take around 3 days, but longer if mailed at the end of the week.
Of course if you use surface mail the delivery from the UK to the USA is 6 weeks, and 12 weeks for UK to Australia
Hope this helps!
Ian
![Mr. Green :mrgreen:](./images/smilies/icon_mrgreen.gif)